git.oblomov.eu Git - linux-2.6/blob - drivers/s390/net/lcs.h

   1 /*lcs.h*/
   2
   3 #include <linux/interrupt.h>
   4 #include <linux/netdevice.h>
   5 #include <linux/skbuff.h>
   6 #include <linux/workqueue.h>
   7 #include <asm/ccwdev.h>
   8
   9 #define LCS_DBF_TEXT(level, name, text) \
  10         do { \
  11                 debug_text_event(lcs_dbf_##name, level, text); \
  12         } while (0)
  13
  14 #define LCS_DBF_HEX(level,name,addr,len) \
  15 do { \
  16         debug_event(lcs_dbf_##name,level,(void*)(addr),len); \
  17 } while (0)
  18
  19 #define LCS_DBF_TEXT_(level,name,text...) \
  20 do {                                       \
  21         sprintf(debug_buffer, text);  \
  22                 debug_text_event(lcs_dbf_##name,level, debug_buffer);\
  23 } while (0)
  24
  25 /**
  26  * some more definitions for debug or output stuff
  27  */
  28 #define PRINTK_HEADER           " lcs: "
  29
  30 /**
  31  *      sysfs related stuff
  32  */
  33 #define CARD_FROM_DEV(cdev) \
  34         (struct lcs_card *) \
  35         ((struct ccwgroup_device *)cdev->dev.driver_data)->dev.driver_data;
  36 /**
  37  * CCW commands used in this driver
  38  */
  39 #define LCS_CCW_WRITE           0x01
  40 #define LCS_CCW_READ            0x02
  41 #define LCS_CCW_TRANSFER        0x08
  42
  43 /**
  44  * LCS device status primitives
  45  */
  46 #define LCS_CMD_STARTLAN        0x01
  47 #define LCS_CMD_STOPLAN         0x02
  48 #define LCS_CMD_LANSTAT         0x04
  49 #define LCS_CMD_STARTUP         0x07
  50 #define LCS_CMD_SHUTDOWN        0x08
  51 #define LCS_CMD_QIPASSIST       0xb2
  52 #define LCS_CMD_SETIPM          0xb4
  53 #define LCS_CMD_DELIPM          0xb5
  54
  55 #define LCS_INITIATOR_TCPIP     0x00
  56 #define LCS_INITIATOR_LGW       0x01
  57 #define LCS_STD_CMD_SIZE        16
  58 #define LCS_MULTICAST_CMD_SIZE  404
  59
  60 /**
  61  * LCS IPASSIST MASKS,only used when multicast is switched on
  62  */
  63 /* Not supported by LCS */
  64 #define LCS_IPASS_ARP_PROCESSING        0x0001
  65 #define LCS_IPASS_IN_CHECKSUM_SUPPORT   0x0002
  66 #define LCS_IPASS_OUT_CHECKSUM_SUPPORT  0x0004
  67 #define LCS_IPASS_IP_FRAG_REASSEMBLY    0x0008
  68 #define LCS_IPASS_IP_FILTERING          0x0010
  69 /* Supported by lcs 3172 */
  70 #define LCS_IPASS_IPV6_SUPPORT          0x0020
  71 #define LCS_IPASS_MULTICAST_SUPPORT     0x0040
  72
  73 /**
  74  * LCS sense byte definitions
  75  */
  76 #define LCS_SENSE_INTERFACE_DISCONNECT  0x01
  77 #define LCS_SENSE_EQUIPMENT_CHECK       0x10
  78 #define LCS_SENSE_BUS_OUT_CHECK         0x20
  79 #define LCS_SENSE_INTERVENTION_REQUIRED 0x40
  80 #define LCS_SENSE_CMD_REJECT            0x80
  81 #define LCS_SENSE_RESETTING_EVENT       0x0080
  82 #define LCS_SENSE_DEVICE_ONLINE         0x0020
  83
  84 /**
  85  * LCS packet type definitions
  86  */
  87 #define LCS_FRAME_TYPE_CONTROL          0
  88 #define LCS_FRAME_TYPE_ENET             1
  89 #define LCS_FRAME_TYPE_TR               2
  90 #define LCS_FRAME_TYPE_FDDI             7
  91 #define LCS_FRAME_TYPE_AUTO             -1
  92
  93 /**
  94  * some more definitions,we will sort them later
  95  */
  96 #define LCS_ILLEGAL_OFFSET              0xffff
  97 #define LCS_IOBUFFERSIZE                0x5000
  98 #define LCS_NUM_BUFFS                   32      /* needs to be power of 2 */
  99 #define LCS_MAC_LENGTH                  6
 100 #define LCS_INVALID_PORT_NO             -1
 101 #define LCS_LANCMD_TIMEOUT_DEFAULT      5
 102
 103 /**
 104  * Multicast state
 105  */
 106 #define  LCS_IPM_STATE_SET_REQUIRED     0
 107 #define  LCS_IPM_STATE_DEL_REQUIRED     1
 108 #define  LCS_IPM_STATE_ON_CARD          2
 109
 110 /**
 111  * LCS IP Assist declarations
 112  * seems to be only used for multicast
 113  */
 114 #define  LCS_IPASS_ARP_PROCESSING       0x0001
 115 #define  LCS_IPASS_INBOUND_CSUM_SUPP    0x0002
 116 #define  LCS_IPASS_OUTBOUND_CSUM_SUPP   0x0004
 117 #define  LCS_IPASS_IP_FRAG_REASSEMBLY   0x0008
 118 #define  LCS_IPASS_IP_FILTERING         0x0010
 119 #define  LCS_IPASS_IPV6_SUPPORT         0x0020
 120 #define  LCS_IPASS_MULTICAST_SUPPORT    0x0040
 121
 122 /**
 123  * LCS Buffer states
 124  */
 125 enum lcs_buffer_states {
 126         BUF_STATE_EMPTY,        /* buffer is empty */
 127         BUF_STATE_LOCKED,       /* buffer is locked, don't touch */
 128         BUF_STATE_READY,        /* buffer is ready for read/write */
 129         BUF_STATE_PROCESSED,
 130 };
 131
 132 /**
 133  * LCS Channel State Machine declarations
 134  */
 135 enum lcs_channel_states {
 136         CH_STATE_INIT,
 137         CH_STATE_HALTED,
 138         CH_STATE_STOPPED,
 139         CH_STATE_RUNNING,
 140         CH_STATE_SUSPENDED,
 141         CH_STATE_CLEARED,
 142 };
 143
 144 /**
 145  * LCS device state machine
 146  */
 147 enum lcs_dev_states {
 148         DEV_STATE_DOWN,
 149         DEV_STATE_UP,
 150         DEV_STATE_RECOVER,
 151 };
 152
 153 enum lcs_threads {
 154         LCS_SET_MC_THREAD       = 1,
 155         LCS_STARTLAN_THREAD     = 2,
 156         LCS_STOPLAN_THREAD      = 4,
 157         LCS_STARTUP_THREAD      = 8,
 158 };
 159 /**
 160  * LCS struct declarations
 161  */
 162 struct lcs_header {
 163         __u16  offset;
 164         __u8   type;
 165         __u8   slot;
 166 }  __attribute__ ((packed));
 167
 168 struct lcs_ip_mac_pair {
 169         __u32  ip_addr;
 170         __u8   mac_addr[LCS_MAC_LENGTH];
 171         __u8   reserved[2];
 172 }  __attribute__ ((packed));
 173
 174 struct lcs_ipm_list {
 175         struct list_head list;
 176         struct lcs_ip_mac_pair ipm;
 177         __u8 ipm_state;
 178 };
 179
 180 struct lcs_cmd {
 181         __u16  offset;
 182         __u8   type;
 183         __u8   slot;
 184         __u8   cmd_code;
 185         __u8   initiator;
 186         __u16  sequence_no;
 187         __u16  return_code;
 188         union {
 189                 struct {
 190                         __u8   lan_type;
 191                         __u8   portno;
 192                         __u16  parameter_count;
 193                         __u8   operator_flags[3];
 194                         __u8   reserved[3];
 195                 } lcs_std_cmd;
 196                 struct {
 197                         __u16  unused1;
 198                         __u16  buff_size;
 199                         __u8   unused2[6];
 200                 } lcs_startup;
 201                 struct {
 202                         __u8   lan_type;
 203                         __u8   portno;
 204                         __u8   unused[10];
 205                         __u8   mac_addr[LCS_MAC_LENGTH];
 206                         __u32  num_packets_deblocked;
 207                         __u32  num_packets_blocked;
 208                         __u32  num_packets_tx_on_lan;
 209                         __u32  num_tx_errors_detected;
 210                         __u32  num_tx_packets_disgarded;
 211                         __u32  num_packets_rx_from_lan;
 212                         __u32  num_rx_errors_detected;
 213                         __u32  num_rx_discarded_nobuffs_avail;
 214                         __u32  num_rx_packets_too_large;
 215                 } lcs_lanstat_cmd;
 216 #ifdef CONFIG_IP_MULTICAST
 217                 struct {
 218                         __u8   lan_type;
 219                         __u8   portno;
 220                         __u16  num_ip_pairs;
 221                         __u16  ip_assists_supported;
 222                         __u16  ip_assists_enabled;
 223                         __u16  version;
 224                         struct {
 225                                 struct lcs_ip_mac_pair
 226                                 ip_mac_pair[32];
 227                                 __u32     response_data;
 228                         } lcs_ipass_ctlmsg __attribute ((packed));
 229                 } lcs_qipassist __attribute__ ((packed));
 230 #endif /*CONFIG_IP_MULTICAST */
 231         } cmd __attribute__ ((packed));
 232 }  __attribute__ ((packed));
 233
 234 /**
 235  * Forward declarations.
 236  */
 237 struct lcs_card;
 238 struct lcs_channel;
 239
 240 /**
 241  * Definition of an lcs buffer.
 242  */
 243 struct lcs_buffer {
 244         enum lcs_buffer_states state;
 245         void *data;
 246         int count;
 247         /* Callback for completion notification. */
 248         void (*callback)(struct lcs_channel *, struct lcs_buffer *);
 249 };
 250
 251 struct lcs_reply {
 252         struct list_head list;
 253         __u16 sequence_no;
 254         atomic_t refcnt;
 255         /* Callback for completion notification. */
 256         void (*callback)(struct lcs_card *, struct lcs_cmd *);
 257         wait_queue_head_t wait_q;
 258         struct lcs_card *card;
 259         int received;
 260         int rc;
 261 };
 262
 263 /**
 264  * Definition of an lcs channel
 265  */
 266 struct lcs_channel {
 267         enum lcs_channel_states state;
 268         struct ccw_device *ccwdev;
 269         struct ccw1 ccws[LCS_NUM_BUFFS + 1];
 270         wait_queue_head_t wait_q;
 271         struct tasklet_struct irq_tasklet;
 272         struct lcs_buffer iob[LCS_NUM_BUFFS];
 273         int io_idx;
 274         int buf_idx;
 275 };
 276
 277
 278 /**
 279  * definition of the lcs card
 280  */
 281 struct lcs_card {
 282         spinlock_t lock;
 283         spinlock_t ipm_lock;
 284         enum lcs_dev_states state;
 285         struct net_device *dev;
 286         struct net_device_stats stats;
 287         unsigned short (*lan_type_trans)(struct sk_buff *skb,
 288                                          struct net_device *dev);
 289         struct lcs_channel read;
 290         struct lcs_channel write;
 291         struct lcs_buffer *tx_buffer;
 292         int tx_emitted;
 293         struct list_head lancmd_waiters;
 294         int lancmd_timeout;
 295
 296         struct work_struct kernel_thread_starter;
 297         spinlock_t mask_lock;
 298         unsigned long thread_start_mask;
 299         unsigned long thread_running_mask;
 300         unsigned long thread_allowed_mask;
 301         wait_queue_head_t wait_q;
 302
 303 #ifdef CONFIG_IP_MULTICAST
 304         struct list_head ipm_list;
 305 #endif
 306         __u8 mac[LCS_MAC_LENGTH];
 307         __u16 ip_assists_supported;
 308         __u16 ip_assists_enabled;
 309         __s8 lan_type;
 310         __u32 pkt_seq;
 311         __u16 sequence_no;
 312         __s16 portno;
 313         /* Some info copied from probeinfo */
 314         u8 device_forced;
 315         u8 max_port_no;
 316         u8 hint_port_no;
 317         s16 port_protocol_no;
 318 }  __attribute__ ((aligned(8)));
 319